We are JIS/GB standard Slewing Ring Specialist!

OEM, ODM, OBM & tailor made on request.


Kyoei Seiki is a slewing ring manufacturer in the PRC with Japanese Industrial Standards (JIS) and GB, JB or JB/T for heavy machineries such as excavator, crane, robot arms, industrial equipment…etc. With over 10 years expertise in the industry, the most advanced technologies, production techniques and stringent quality control specifications from Japan, we built a professional and specialist production line since 2007.

Top Slewing Ring manufacturer

Our Group ranked fifth1 among the slewing ring manufacturers in the PRC in terms of sales revenue to overseas markets.  Further, we are the largest slewing ring manufacturer in South China (in terms of sales revenue to overseas markets.)

Kyoei Seiki also a subsidiary of Best Linking Group. (8617.HK)

For more details


Currently, Kyoei Seiki is appointed as an OEM supplier for three Japanese Heavy Machine manufacturers. Our OEM customers include leading Japanese manufacturers or their affiliates, such as, Sumitomo (S.H.I) Constructions Machinery Co., Ltd., Yutani Industrial Co., Ltd. & Ishikawajima SCE(Xiamen) Construction Machinery Co., Ltd.

We also had established a wide distribution and aftermarket in Japan, Asia, Europe and North & South America.

We manufacture only one OEM standard and offer the most comprehensive range of products with a shorter delivery time. This is our commitment to all treasured customers.

*The above information are referring to the prospectus in our group holding company, for more details please refer to www.blg.hk for details.

Sumitomo (S.H.I) Constructions Machinery Co., Ltd.

A subsidiary of a company listed on Tokyo Stock Exchange, which is engaged in the manufacture of various machineries, and its subsidiary. Sumitomo is a leading heavy machine manufacturer in Japan.

Yutani Industrial Co., Ltd.

Which is a leading construction machinery parts supplier in Japan.

Ishikawajima SCE(Xiamen) Construction Machinery Co., Ltd.

Whose shareholder is a leading heavy industry company in Japan.


People orientation, care for employees, customers and partners, with good faith and mutual trust


Customer First, to deliver to our customers: satisfaction, diversity solutions, commitment and better relationship

Product and Service Foremost, continue to provide premier products and services with stringent quality assurance and professional team & equipment

Sustain the leadership position as a premium manufacturer with effective and efficient management and production while integrate the company interests with the industry interests and social interests.



Supported by a capable management team which has in-depth knowledge and Over 30 years of experience in the slewing rings manufacturing industry.


OEM supplier for three Japanese Heavy Machine manufacturers, including Sumitomo, Yutani, and IHI.


Our products can be widely applied to over 200 types of models of excavators and cranes, wind turbines, military industry, robotics, etc.


We are always striving for strengthen our staff morale and improve our ability to retain personnel.